1663242260 has 24 divisors (see below), whose sum is σ = 3698268840. Its totient is φ = 626161664.

The previous prime is 1663242247. The next prime is 1663242271. The reversal of 1663242260 is 622423661.

It can be written as a sum of positive squares in 4 ways, for example, as 737013904 + 926228356 = 27148^2 + 30434^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2445605 + ... + 2446284.

It is an arithmetic number, because the mean of its divisors is an integer number (154094535).

Almost surely, 2^1663242260 is an apocalyptic number.

1663242260 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1663242260 is an abundant number, since it is smaller than the sum of its proper divisors (2035026580).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1663242260 is a wasteful number, since it uses less digits than its factorization.

1663242260 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4891915 (or 4891913 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 32.

The square root of 1663242260 is about 40782.8672361324. The cubic root of 1663242260 is about 1184.8185281164.

The spelling of 1663242260 in words is "one billion, six hundred sixty-three million, two hundred forty-two thousand, two hundred sixty".